Illegitimate

Part of speech: verb (v.)

To render illegitimate; to declare or prove to be born out of wedlock; to bastardize; to illegitimatize. The marriage should only be dissolved for the future, without illegitimating the issue. Bp. Burnet.

Part of speech: adjective (a.)

1. Not according to law; not regular or authorized; unlawful; improper.

2. Unlawfully begotten; born out of wedlock; bastard; as, an illegitimate child.

3. Not legitimately deduced or inferred; illogical; as, an illegitimate inference.

4. Not authorized by good usage; not genuine; spurious; as, an illegitimate word. Illegitimate fertilization, or Illegitimate union (Bot.), the fertilization of pistils by stamens not of their own length, in heterogonously dimorphic and trimorphic flowers. Darwin.